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Research Highlights

Published: Tue, 06/20/2017 - 3:15pm

The Kapteyn-Murnane group has come up with a novel way to use fast bursts of extreme ultraviolet light to capture how strongly electrons interact with each other in materials. This research is important for figuring out how quickly materials can change their state from insulating to conducting, or from magnetic to nonmagnetic. In the future such fast switching may lead to faster and more efficient nanoelectronics.

In this work, graduate student Cong Chen, research associate Zhensheng Tao, and their colleagues used sequences of attosecond (10-18 s) bursts of extreme ultraviolet light to compare how long it took an electron to be emitted from the same energy levels, or bands, in two different metals––copper (Cu) and nickel (Ni).

In the past, scientists thought that the photoelectric effect, in which a high-energy photon kicks out an electron from a material, was instantaneous. More recently, with the advent of shorter and shorter laser pulses, scientists have been able to investigate such super-fast processes directly. And, they have discovered many surprises. In Chen’s and Tao’s work, the researchers found that the photoelectron lifetime was 100...

Published: May 22, 2017

JILA and NIST scientists are hot on the trail of understanding quantum correlations (or...

Published: Apr 21, 2017

The Regal group recently met the challenge of measurements in an extreme situation with a device...

Published: Mar 30, 2017

The first results are in from a new search for the axion, a hypothetical particle that may...

Published: Mar 20, 2017

Dennis Gardner and his coworkers in the Kapteyn-Murnane group accomplished two major...

Published: Mar 03, 2017

The lovely Crab Nebula was created by a supernova and its spinning-neutron-star remnant known as...

Published: Mar 02, 2017

The Perkins group continues to extend the performance of its unique Atomic Force Microscope (AFM...

Published: Dec 21, 2016

Research associate Shimon Kolkowitz and his colleagues in the Ye group and Rey theory group have...

Published: Dec 19, 2016

Deborah Jin, Jun Ye, and their students wrote a review during the summer of 2016 for Nature...

Published: Dec 13, 2016

Astrophysicist Jeff Linsky and his colleagues recently created a sophisticated mathematical...

Published: Dec 12, 2016

The Rey and Ye groups discovered the strange rules of...

Published: Nov 22, 2016

Galaxy mergers routinely occur in our Universe. And, when they take place, it takes years for...

Published: Nov 21, 2016

Graduate student Mike Thompson of the Weber group wants to understand the basic science of...

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